Improvement in lamps



UNITED STATES LEWIS J. ATW OOD, OF WATERBURY, CONNECTICUT, ASSIGNOR TCTHE PLUME PATENT OFFICE.

& ATWOOD MANUFACTURING COlWPANY, OF SAME PLACE.

IMPROVEMENT IN LAMPS.

Specification forming part of Letters Patent No. 118,421, dated August29, 1871.

To all whom it may concern:

Be it known that I, LEwrs J. ATwooD, of Waterbury, in the county of NewHaven and State of Connecticut, have invented and .made an Improvementin Lamps 5 and the following is declared to be a correct descriptionthereof:

This invention is an'improvement upon that for which Letters Patent weregranted to me April 18, 1871, No. 113,833.

The present improvement relates to a cylindrical barrel containing thescrew that operates the wick-raising Wheels, and which barrel issustained by and revolves upon a :flange around the wick-tube. To thisbarrel the removable chimney-holder is applied so that the two can berevolved together.

In the drawing, Figure l is a vertical section of the lamp-burnercomplete. Fig. 2 is a plan ofthe same, with the chimney-holder andbarrel removed. Fig. 3 is a plan of the base of the chimney-holder. Fig.4 is a section, and Fig. 5 a sectional plan of the barrel separately.Fig. 6 is a section, and Fig. 7 a plan lof the screw detached; and Fig.8 is the ring-ange of the wicktube separately.

The wick-tube a, air-tube b, lateral inlet c, wick-raising wheels d,large screw-collar e, small screw-collar j' are substantially the sameas in the aforesaid patent, and do not require further description. Thelcylindrical barrel It is contracted at the upper end to set arromid thewicktube a, and said barrel surrounds a flange, i, that is attachedpermanently to the said wiektube a. The sheet metal of the barrel h iscut and pressed inward to form the fingers 2 2 that rest upon the ange tto sustain the same in position, and the fingers 3 3 can also be pressedin beneath this lange after the parts are in place to prevent the barrellifting off, but at the same time it is allowed to turn freely andoperate the wick-raising wheels by means ofthe screw that is affixed tothe inside of the tube or barrel h. This screw l is preferably made oftriangular wire wound into a coil, as shown in Figs. 6 and 7, and theninserted into the barrel h and secured by solder. The chimney-rest m ismade with corrugations, as seen in Figs. 1 and 3, so that there will beinlets for air between the chimney and its rest, and upon this rest isthe springholder u for receiving the chimney. This chimney-rest andholder are supported by the air-distributer r and surround the barrel h,and can be lifted oft' to give access to the wick for trimming orlighting. There are ribs 5 5 upon the barrel h, and notches 6 G in thechimney-rest m, so that the barrel h can be revolved for raising orlowering the wick by turning the chimney-rest and holder.

This lamp is easily constructed, strong, cheap, and durable.

I claim as my invention- 1. The barrel h, containing the screw Z andsupported by the ring-flange i around the wicktube a, substantially asset forth.

2. The corrugated chimney-rest surrounding the Vbarrel h, but removabletherefrom, in combination with the wick-raising Wheels d, screw l, andbarrel h, substantially as set forth.

3. Thev screw Z made of the triangular wire coiled and soldered withinthe barrel h, as set forth.

Signed by me this 6th day of June, A. 111871.

L. J. ATWOOD.

Witnesses:

CEAS. H. Sii/11TH, GEO. T. PINCKNEY.

